No, this is not huge. Not even really newsworthy.
Site is not affiliated with Farmville and it is ranked 66k on Alexa. For comparison, MtGox with its few tens of thousands of users is ranked 35k, and bitcointalk is 25k.
No idea about the 360k FB likes, maybe these are just bots?
What the hell? Mt. Gox has close to 100 000 users and it's the center point of the Bitcoin economy. Something qualifies as huge only if it passes the Alexa rank of Gox? I don't think so.
I don't know what you meant with not being affiliated with Farmville, wtf? It's a Farmville news site, one of the most popular ones at that. With over 4 million hits each month. The Facebook page is not made up either, there are hundreds of likes on average for each post and plenty of comments.
This has massive implications. This is the first site of this size that really adopts Bitcoin advertising. It will lead to the 4 million hits looking at the word Bitcoin each month (which is in their main menu and in the advertisements themselves). On top of that many of the ads are Bitcoin related. Not only that, more and more sites will be interested in Bitcoin ads when they see how cheap it is and how easy it is.